Seventeen-year-old Violet Eden is Grigori - part angel, part human. Her destiny is to protect humans from the vengeance of exiled angels. Knowing who to trust is key, but when Grigori reinforcements arrive, it becomes clear everyone is hiding something. Even her partner, Lincoln. And with Phoenix more dangerous than ever, Violet is truly on her own. The race to find the one artifact that could tilt the balance of power between Angels and Exiles brings them to the cradle of civilization, where Violet's power will be pushed to the extreme. And the ultimate betrayal exposed.